Mukai Naoya is in a relationship with Saki Saki, but another girl, Mizuse Nagisa, asks him out. He makes the unthinkable decision of asking them if they would be up for both dating him at the same time.
I won't spare any effort 
to make it a success!
!سأعمل بجدّ لأجعل الأمر ينجح
Ich werde keine Mühen scheuen, um mit
zwei Mädchen zusammen sein zu dürfen!
¡Haré lo que sea necesario
para lograrlo!
¡Haré lo que haga falta
para lograrlo!
Je ferai tous les efforts du monde
Farò qualsiasi sforzo perché la cosa funzioni!
Não medirei esforços para que isso dê certo!
Я не пожалею никаких сил, чтобы 
эти отношения сложились как надо!